OCR GCSE Gateway Science Suite - Combined Science A J250 · P4.3a
Protons, neutrons and nuclear charge
- Code
- P4.3a
- In
- P4.3 Radioactivity
- Topic
- P4 Waves and radioactivity
- Course
- GCSE Gateway Science Suite - Combined Science A J250
- Board
- OCR
Grade boundaries·OCR command words
Codes and titles are read by a script from OCR's published specification and have not been checked by a person. What each point covers is in the specification itself: OCR’s specification.
Points in P4.3 Radioactivity
- P4.3a Protons, neutrons and nuclear charge
- P4.3b Isotopes and neutron numbers
- P4.3c Nuclear notation for isotopes
- P4.3d Unstable nuclei and radioactive emissions
- P4.3e Emissions and changes to the nucleus
- P4.3f Writing radioactive decay equations
- P4.3g Balancing decay equations
- P4.3h Electron energy levels and radiation
- P4.3i Radiation from changes in atoms and nuclei
- P4.3j Half-life and random decay
- P4.3k Decline after a number of half-lives
- P4.3l Penetration of alpha, beta and gamma
- P4.3m Contamination and irradiation